<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>

  <body>
    <div id="app"></div>

    <script src="./renderer.js"></script>
    <script>
      // 1.通过h函数创建一个vnode
      const vnode = h('div', { class: 'fh', id: 'aaa', name: 'bbb' }, [
        h('h2', null, '当前计数：100'),
        h('button', { onClick: function () {} }, '+1')
      ]) // vdom

      // 2.通过mount函数，将vnode挂载到div#app上
      mount(vnode, document.querySelector('#app'))

      // 3.创建新的vnode
      setTimeout(() => {
        const vnode1 = h('div', { class: 'fuhuan', id: 'aaa' }, [
          h('h2', null, '当前计数：-100'),
          h('button', { onClick: function () {} }, '-1')
        ])
        patch(vnode, vnode1)
      }, 2000)
    </script>
  </body>
</html>
